FileWare floppy disk drives and diskettes were designed by Apple Computer as a higher-performance alternative to the Disk II and Disk III floppy systems used on the Apple II and Apple /// personal computers. The drives were also referred to as Apple 871 drives in service documentation,[1] based on their approximate formatted storage capacity in kilobytes, but were most commonly known by their code name, Twiggy, after the 1960’s fashion model Twiggy.